Miles de familias campesinas de Pará, en el noreste de la Amazonia brasileña, apuestan por la palma africana y se asocian con empresas del sector de los biocombustibles. “Un bicho raro”, con desafíos culturales y económicos. La finca de Antônio de Oliveira huele a una mezcla de naranjas, pimienta...

Les virus de l’immunodéficience humaine (VIH) qui résistent aux médicaments contre le SIDA sont essentiellement transmis par les personnes qui ne reçoivent encore aucun traitement. Afin d’enrayer la propagation de ces virus résistants, des efforts supplémentaires doivent être déployés pour la...

Human-Immunodeficiency Viruses that resist AIDS medicines are primarily transmitted by people who are not actually undergoing treatment. In order to prevent a spread of the resistant viruses increased efforts in prevention and early diagnosis of new infections are needed, as concluded by the Swiss...

HI-Viren, die gegenüber den Medikamenten gegen Aids resistent sind, werden vor allem von Personen übertragen, die noch gar nicht in Behandlung stehen. Um eine Ausbreitung der resistenten Viren zu verhindern, sind vermehrte Anstrengungen in der Prävention und der frühen Erkennung von Neuinfektionen...

"" A simplified model was developed to represent radionuclide migration from a deep geological nuclear waste repository system to the biosphere. The modelled repository system is based on the concept of multiple nested transport barriers. The model can be used to assess migration and migration...

The international authority that oversees naming rules for animal species hold first meeting in Singapore; Members to address new challenges and changes to this process, and to chart the way how ICZN works for decades ahead Fuente : http://www.alphagalileo.org/ViewItem.aspx?ItemId=1...

Researchers at the University of California, Riverside's Bourns College of Engineering have redesigned the component materials of the battery in an environmentally friendly way to solve some of the problems associated with electric car batteries. By creating nanoparticles with a controlled shape,...

Methanosaeta species are so active in some wetlands, they are considered the most prodigious methane producers on Earth. This is a concern because atmospheric methane is 20 times more effective at retaining heat than CO2, and as tundra soils warm due to climate change, greater methane releases are...

New research by a University of Pittsburgh professor -- showing that competition can spur the homeless to save more -- offers a possible insight into helping the homeless improve their future prospects. Fuente : http://www.eurekalert.org/pub_releases/2013-11/uop...

Therapeutic hypothermia -- cooling the body and brain down to 33 C -- is the method used worldwide to treat cardiac arrest, even though a lower body temperature may raise the risk of side-effects. However, keeping the temperature steady at 36 C is just as effective, a study led by Lund University...

Patients with acute coronary syndrome who were treated with the experimental drug varespladib were more likely to experience additional cardiovascular events -- including sudden death, heart attack and stroke -- than those treated with placebo, according to research from the Cleveland Clinic...

Young adults who survived childhood cancer are more likely than their peers to be frail, according to a St. Jude Children's Research Hospital study, which reported the condition is more common among female survivors than women decades older. Fuente : http://www.eurekalert.org/pub_releases/2013-11/sjc...

Unexpected behavior in ferroelectric materials explored by researchers at the Department of Energy's Oak Ridge National Laboratory supports a new approach to information storage and processing. Fuente : http://www.eurekalert.org/pub_releases/2013-11/drn...

Why do the faces of primates contain so many different colors, including black, blue, red, orange and white, mixed in all kinds of combinations, and often striking patterns? UCLA biologists report on the faces of 139 African and Asian primate species that have been diversifying over some 25 million years. Fuente :...

A new University of Michigan study found that the state immunization registry -- the public health database that tracks vaccinations -- can be an effective tool to encourage influenza vaccinations during a pandemic. Fuente : http://www.eurekalert.org/pub_releases/2013-11/uom...

University of Cincinnati research examines whether prison inmates with military backgrounds are more likely to misbehave. Fuente : http://www.eurekalert.org/pub_releases/2013-11/uoc...

Entrega del podcast Ciencia y genios, en Ciencia para Escuchar, que recomendamos por su interés.Una gélida tarde de diciembre de 1938, en el laboratorio de Física del Instituto Nobel de Estocolmo, una mujer de ojos cansados y cierto aire de tristeza, miraba fijamente una hoja en blanco con la......

A process that could revolutionize solar energy harvesting has been efficiently demonstrated in solution for the first time. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/V...

Researchers have made the first battery electrode that heals itself, opening a new and potentially commercially viable path for making the next generation of lithium ion batteries for electric cars, cell phones and other devices. The secret is a stretchy polymer that coats the electrode, binds it together and spontaneously...

A temporary seismic array in Marie Byrd Land in West Antarctica recorded two bursts of activity in 2010 and 2011. Careful analysis of the events shows they originate from a subglacial volcano at the leading end of a volcanic mountain chain. The volcano is unlikely to erupt through the kilometer of...

Unlike long-term climate predictions, forecasts about the next twenty to fifty years are fraught with major uncertainties. In spite of this, however, ETH-Zurich scientists have now managed to make projections about the future distribution of heat and precipitation extremes. Fuente :...

One of the methods used for examining the molecules in a liquid consists in passing the fluid through a nano-sized hole so as to detect their passage. Researchers have found a way to improve this technique by using a material with unique properties: graphene. Fuente :...

Two billion years ago the Earth system was recovering from perhaps the single-most profound modification of its surface environments: the oxygenation of the atmosphere and oceans. This led to a series of major changes in global biogeochemical cycles. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/g...

By using a new analysis method, researchers have found close to one hundred novel human gene regions that code for proteins. A number of these regions are so-called pseudogenes, which may be linked to cancer. The expectation is now that this recently developed protein analysis method will open up a...

“Virtual reality hands” — controlled by stroke survivors’ thoughts — could help them recover use of their hands and arms. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/_...

Un equipo internacional de investigadores consigue crear estructuras renales tridimensionales en cultivo utilizando células madre humanas. Este pionero avance facilitará el estudio de las enfermedades renales, el descubrimiento de nuevos fármacos y es un paso más hacia la aplicación de terapias basadas en el uso de células...

Un equipo internacional de científicos ha calculado cuáles son las áreas protegidas más insustituibles del planeta desde el punto de vista de su biodiversidad. El trabajo se hizo a partir de una base de datos de 173.000 regiones protegidas, y las evaluaciones de 21.500 especies de la Lista Roja......

Hasta la fecha, se sabía poco sobre el desarrollo del tórax a lo largo del ciclo vital humano debido a su estructura metamérica –compuesta de muchos elementos anatómicos– y a la compleja curvatura de las costillas. Las imágenes médicas en 3D han permitido visualizar la caja torácica pero ha sido......

An international team spearheaded by researchers from the University of Copenhagen has identified the genes that put some children at particularly high risk of serious asthma attacks, including one not previously suspected of being implicated in the disease. In the long term, these new findings are...